Note:
Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

Unlock the battery release lever [1]. Holding the battery release lever in the unlocked position [2], remove the battery pack in the direction shown by arrow [3].

Please perform the following step as shown in the picture below

When installing: Install the battery pack along the slide rails of the slot. Then make sure that the battery release lever is in the locked position.